Streamer mechanism for negative corona current pulses

1998 ◽  
Vol 83 (11) ◽  
pp. 5678-5690 ◽  
Author(s):  
Mirko Černák ◽  
Tatsuzo Hosokawa ◽  
Shigeo Kobayashi ◽  
Teruo Kaneda
Keyword(s):  
Negative Corona ◽  
Current Pulses ◽  
Corona Current

Comparison of the first negative corona current pulses in N2 + SF6 and CO2 + SF6 mixtures

2006 ◽  
Vol 56 (4) ◽  
pp. 399-408 ◽  
Author(s):  
J. Kúdelčík ◽  
M. Gutten ◽  
A. Zahoranová
Keyword(s):  
Negative Corona ◽  
Current Pulses ◽  
Corona Current

Negative Corona Current Pulses in SF6– Air Mixtures

2002 ◽  
Vol 42 (5) ◽  
pp. 546-555 ◽  
Author(s):  
J. Kúdelčík ◽  
A. Zahoranová ◽  
K. Choma ◽  
M. Černák
Keyword(s):  
Negative Corona ◽  
Current Pulses ◽  
Corona Current

scholarly journals Negative Corona Current Pulses and Cathode Sheath Instabilities in a Short Point-Plane Gap in CO2

1992 ◽  
Vol 45 (2) ◽  
pp. 193 ◽  
Author(s):  
M Cernák ◽  
T Hosokawa
Keyword(s):  
Complex Form ◽  
Leading Edge ◽  
Negative Corona ◽  
Cathode Sheath ◽  
Current Pulses ◽  
Corona Current ◽  
Pulse Peak ◽  
Pulse Formation ◽  
A Current ◽  
Gas Pressures

Waveforms ofthe first negative corona current pulses have been measured in C02 and C02+SF6 mixtures as a function of applied voltage and gas pressure in the range 6�67-66�7 kPa. A complex form of the pulses with a step on the pulse leading edge and a current hump on the pulse trailing part has been found at gas pressures below 40 kPa. Changing the cathode surface material from copper to copper iodide, which has an exceptionally high photoelectric yield, resulted in at least a twofold increase in height of the step on the pulse leading edge, but had little effect on the main current rise to the pulse peak. The use of unconditioned cathodes resulted in the appearance of peculiar current spikes on the pulse tail, which are tentatively attributed to positive-streamer-like instabilities of the cathode sheath. The implications of these results for theories of Trichel pulse formation are discussed, and a physical picture of the phenomenon based on the presumed existence of a cathode-directed streamer associated with the steep pulse rise is outlined.

Effect of terpene admixture on negative corona current pulses in air

2004 ◽  
Vol 54 (S3) ◽  
pp. C790-C795 ◽  
Author(s):  
A. Zahoranová ◽  
A. Buček ◽  
M. Odrášková ◽  
M. Černák ◽  
M. Černák
Keyword(s):  
Negative Corona ◽  
Current Pulses ◽  
Corona Current

Complex form of current pulses in negative corona discharges

1991 ◽  
Vol 43 (2) ◽  
pp. 1107-1109 ◽  
Author(s):  
Mirko Černák ◽  
Tatsuzo Hosokawa
Keyword(s):  
Complex Form ◽  
Corona Discharges ◽  
Negative Corona ◽  
Current Pulses

Theory of step on leading edge of negative corona current pulse

2000 ◽  
Vol 33 (6) ◽  
pp. 681-691 ◽  
Author(s):  
Deepak K Gupta ◽  
Sangeeta Mahajan ◽  
P I John
Keyword(s):  
Current Pulse ◽  
Leading Edge ◽  
Negative Corona ◽  
Corona Current
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